Thing 16- I am familiar with wikis because the university where I work uses them. There are numerous "staff pages" that are wikis. These include committee reports, procedure documents, etc. I also must admit that I often use Wikipedia. It's such an easy way to locate information quickly however, when writing a formal report or paper, I never use Wikipedia as a source. I often just use it to look at the citations for certain topics.
Thing 17- I created an account and added information about one of my favorite books-Night by Elie Wiesel- to the Learning 2.0 Sandbox wiki. It was so easy.